# Pendulums vs ThunderBeast

The clearest difference is update cadence: Pendulums at every 4 days against ThunderBeast's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Pendulums sells 1 one-off in-app purchase and ThunderBeast sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Pendulums ships an update every 4 days, ThunderBeast every 2 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Pendulums | ThunderBeast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pendulums-chaos-melody/id6803192958/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 63 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Wilfredo Jr Bigol](https://appshunter.io/developer/561703410) | [Tomocreate, Inc.](https://appshunter.io/developer/1895224165) |

## What reviewers say

### Pendulums

[App page](https://appshunter.io/ios/app/pendulums-chaos-melody/id6803192958)

This app generates unique musical compositions based on the principles of chaos theory and physics. Users can interact with a pendulum system to influence the music's structure and mood, with no pre-recorded loops or arrangements. It offers a wide range of scales, instruments, and accompaniment styles for creative exploration.

**Highlights:** Chaos theory-driven music generation, Interactive pendulum control, Dynamic song structure based on physics, 26 diverse musical scales, 8 accompaniment styles, Multiple sampled and synthesized instruments, Exportable MIDI files

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock AUv3 | $2.99 | one-time |


### ThunderBeast

[App page](https://appshunter.io/ios/app/thunderbeast/id6803942479)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThunderBeast Pro | $9.99 | one-time |


## Frequently asked questions

### Is Pendulums free?

Pendulums is free to download, with in-app purchases available.

### Is ThunderBeast free?

ThunderBeast is free to download, with in-app purchases available.

### Do Pendulums or ThunderBeast have ads?

Neither Pendulums nor ThunderBeast shows ads.

### Which is updated more often, Pendulums or ThunderBeast?

Pendulums ships an update every 4 days, and ThunderBeast every 2 weeks. Most recently, Pendulums was updated on November 6, 2026 and ThunderBeast on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*